URGENT HELP, MY LIFE DEPENDS ON IT | Mathematics | Page 1

peak eagle Jul 1, 2024, 3:53 AM

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I REALLY REALLY NEED HELP, I DON'T UNDERSTAND THESE QUESTIONS. I KNOW PIECEWISE FUNCTIONS BUT I DON'T UNDERSTAND WHAT I'M SUPPOSED TO DO. PLEASE SOMEONE HELP ME SOON, I REALLY NEED IT

tacit grailBOT Jul 1, 2024, 3:53 AM

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peak eagle I REALLY REALLY NEED HELP, I DON'T UNDERSTAND THESE QUESTIONS. I KNOW PIECEWISE ...

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deft arch Jul 1, 2024, 4:46 AM

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just plug the value replacing x in the function into the correct formula based on its value(I.E. is x < 19 or is x >= 19)

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then for 59 and 60, determine the piece-wise notation, then plug the value in.

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it wants the resulting y value

peak eagle Jul 1, 2024, 4:52 AM

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deft arch then for 59 and 60, determine the piece-wise notation, then plug the value in.

what was piecewise notation again?

deft arch Jul 1, 2024, 4:57 AM

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the function must be described using multiple formulae as the function acts differently with different values of x

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so, when x is in a specific domain, it follows one set of rules to output the y-value. In a different domain it would follow different rules to determine the y-value.

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it is kind of like graphing two functions on the same graph but excluding the overlaping parts.

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(58) is an example of piece-wise notation.

peak eagle Jul 1, 2024, 5:01 AM

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wait for 59, I have to write the equation and then plug in 1?

deft arch Jul 1, 2024, 5:01 AM

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yep

peak eagle Jul 1, 2024, 5:01 AM

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hmmm ok

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I still don't really understand 60 tho

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I'm not good at dealing with non-straight lines lol

deft arch Jul 1, 2024, 5:02 AM

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make note that one of (59)'s dots is hollow

peak eagle Jul 1, 2024, 5:02 AM

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except quadratics, i freaking love quadratics

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but that's not the point

deft arch Jul 1, 2024, 5:02 AM

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peak eagle I'm not good at dealing with non-straight lines lol

it has an asymptote

peak eagle Jul 1, 2024, 5:02 AM

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deft arch it has an asymptote

a what?

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what's an asymptote

deft arch Jul 1, 2024, 5:04 AM

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basically, the function would divide by 0 with that value of x

peak eagle Jul 1, 2024, 5:05 AM

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deft arch basically, the function would divide by 0 with that value of x

but that'd make it undefined, right?

deft arch Jul 1, 2024, 5:06 AM

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yep, but it also makes the y-value approach (-) infinity

peak eagle Jul 1, 2024, 5:06 AM

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wait

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idk how to write the equations of the lines

deft arch Jul 1, 2024, 5:07 AM

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in 59?

peak eagle Jul 1, 2024, 5:07 AM

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in 60

deft arch Jul 1, 2024, 5:07 AM

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alr

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gimme a moment

peak eagle Jul 1, 2024, 5:07 AM

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take your time

deft arch Jul 1, 2024, 5:08 AM

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alr

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when x=(-4), what y-value is the solid dot at?

peak eagle Jul 1, 2024, 5:09 AM

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-1?

deft arch Jul 1, 2024, 5:10 AM

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yep

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the piece-wise for this one is a reciprocal function when x is not=(-4), OR, x+3 when x is=(-4)

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since we only need to answer with the y-values, stating that you can clearly see the point (-4,-1) should be adequate for an answer.

peak eagle Jul 1, 2024, 5:15 AM

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wait what are reciprocal functions?

deft arch Jul 1, 2024, 5:16 AM

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1/f(x)

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instead of f(x)

peak eagle Jul 1, 2024, 5:16 AM

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oh wait

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is it those functions with fractions?

deft arch Jul 1, 2024, 5:16 AM

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yeah, sometimes

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this one specifically is a reciprocal of a quadratic

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this function is acually 1/-x^2

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with (-4) excluded of course.

peak eagle Jul 1, 2024, 5:23 AM

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deft arch this function is acually 1/-x^2

really? the line looks slightly above 0 tho

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are u sure it isn't 1/-x^2 + 1/2?

deft arch Jul 1, 2024, 5:26 AM

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yep, 100%

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I apologize

peak eagle Jul 1, 2024, 5:27 AM

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hmmmm ok

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I think I understand but I won't close the chat bc i haven't gotten to the problem yet but at least I know how to do it now

deft arch Jul 1, 2024, 5:28 AM

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alright, if you need any more help feel free to ask. Good Luck!

#URGENT HELP, MY LIFE DEPENDS ON IT